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Installation and Tuning


Select the year, make, and model of your machine to find specific exhausts, equipment, and accessory installation instructions with recommended fuel settings for an HMF exhaust system.


Frequently Asked Questions

Looking for assistance on exhaust maintenance or tips on our off-road equipment? Our FAQ is a central hub for advice and information on exhausts, equipment, tuning, and maintenance.

How do I repack my exhaust?

Typically, the average rider will need to repack their exhaust after about 40-50 hours of riding. This can vary, however, depending on the type of riding you do. More aggressive...read more

Do I have to tune my vehicle?

Not all machines require tuning and we’ll tell you if it is needed or not. With modern fuel injection systems, they do not typically have the capability to compensate for the increased demand for fuel when an HMF exhaust is installed. read more

How does the Optimizer work?

Installing the HMF Optimizer The first step when installing the Optimizer is to connect it to a good ground source. This can be a good part of the chassis or the negative battery... read more

What is a Quiet Core?

Spark Arrestor The purpose of the spark arrestor is to keep hot debris from exiting the exhaust which can potentially harm the environment. They are easy to install, simply unbolt the... read more

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